Multiplex communications – Wide area network – Packet switching
Patent
1990-02-12
1993-04-20
Richardson, Robert L.
Multiplex communications
Wide area network
Packet switching
370112, G06F 1300
Patent
active
052049493
ABSTRACT:
An ISDN communication controller or a multi-circuit communication controller is implemented in a sheet of communication adapter board. For each channel or circuit, a dedicated subprocessor section conducts communication processing. In each subprocessor section, a local bus is disposed to connect a CPU, a serial controller, and an RAM. In a main processor section controlling the subprocessors, a local bus is employed to connect a CPU, an RAM, and an ROM. In a system processor section exclusively achieving information processing, a system bus is used to connect a CPU and a main memory. The local buses are connected via respective controllers to an upper-level local bus. A shared RAM is connected via a controller to the upper-level local bus and the system bus. The controllers of the subprocessor sections translate addresses to be outputted from the main processor section to the upper-level local bus to supply translated addresses to the respective local bus.
REFERENCES:
patent: 4727495 (1988-02-01), Cheetham et al.
patent: 5047923 (1991-09-01), Elstner et al.
Oishi Shiro
Oura Tetsuo
Saeki Yuuji
Watanabe Yoshinori
Yasue Toshikazu
Hitachi , Ltd.
Richardson Robert L.
LandOfFree
Multi-channel/multi-circuit communication controller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-channel/multi-circuit communication controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-channel/multi-circuit communication controller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1531594